5 Answers
5

Where to find it when it was downloaded

If you have been able to "download" the file, the most likely location to find it is either /sdcard/download or /sdcard/downloads.

It wasn't downloaded, but "saved for offline reading"

But as it turns out, the stock browser didn't give you that option, and you had to "save for offline reading" -- which is something different. In this case the file probably is stored on internal storage (below /data/data/com.android.browser). Without root you've got not many chances to access it there. So you could either try with a different browser -- or simply copy-paste the text file into some note-taking app / editor (e.g. Jota Text Editor or AmbleLink Notepad Basic Ed.).

Alternative download options

If you have to do this more often, or formatting gets lost on copy-paste, you're probably much better of with some "downloader tools". I just know about Tasker, which offers HTTP_GET actions. Depending on your ROM, the shell might provide wget (stock ROM on my Milestone 2 had this), so all you need in that case is a terminal app (e.g. Android Terminal Emulator), and there simply execute

# change to the directory where you want to store the downloaded file in
cd /sdcard/download
# get the file
wget http://www.example.com/textfile.txt

Going on a plane or in a no coverage area doesn’t mean you can’t access your favourite videos and documents. In order to have access to offline content, go to the website of your choice using the browser, hit the “option” button, tap "save for offline reading". Once you have turned off your wireless and 3G connection, go back to the browser and hit the star icon next to the address line. Tap “saved pages” and it will pop up with a list which will allow you to access the sites without internet access.